/*logo样式*/
.logo {
    width: 500px;
    height: 300px;
    position: fixed;
    left: 150px;
    top: 30px;
}

.logo > img {
    max-width: 100%;
    max-height: 100%;
}

/*版权样式*/
.copyright {
    position: fixed;
    bottom: 10px;
    font-size: 16px;
    display: block;
    width: 100%;
    text-align: center;
}